Spalding
What you say is certainly correct from a technical standpoint. However, when bringing in the human element into the equation, some people seem to need a new piece of equipment to rekindle their fervor.

Case in point, I have had my KN7000 for four years and certainly am not proficient at getting the most from it. Knowing this, I try and revisit my manual, but it is the same old keyboard, however good. I buy a PA800, ostensibly for a backup. First of all, I'm amazed at the advance in technology in four years, making it easier and faster to accomplish things in performance. I now am fired up again and begin learning all I can.

Does it make me a better player ? Only if I put this new unbridled passion to work on honing my skills. In other words, it is a mental state of mind that acts as a catylist to some, including myself.